#ifndef __dbg_h__
#define __dbg_h__

#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
// #define NOLOG

static inline char *
nano_get_time()
{
	char * buffer;
	time_t now;

	now    = time(NULL);
	buffer = ctime(&now);
	if (!buffer)
		return NULL;

	if (buffer[strlen(buffer) - 1] == '\n')
		buffer[strlen(buffer) - 1] = '\0';

	return buffer;
}

#ifdef NDEBUG
#define debug(M, ...)
#else
#define debug(M, ...)                                                 \
	fprintf(stderr, "[DEBUG] %s:%d: " M "\n", __FILE__, __LINE__, \
	    ##__VA_ARGS__)
#endif

#define clean_errno() (errno == 0 ? "None" : strerror(errno))

#define log_err(M, ...)                                                 \
	fprintf(stderr, "[ERROR] (%s:%d: errno: %s) " M "\n", __FILE__, \
	    __LINE__, clean_errno(), ##__VA_ARGS__)

#define log_warn(M, ...)                                                \
	fprintf(stderr, "[WARN] (%s:%d) " M "\n", __FILE__,             \
	    __LINE__, ##__VA_ARGS__)
// #define NOLOG
#ifdef NOLOG
#define log(M, ...)
#define log_info(M, ...)
#else
#define log_info(M, ...)                                                  \
	fprintf(stderr, "[INFO] %s (%lu:%s:%d) " M "\n", nano_get_time(), \
	    pthread_self(), __FUNCTION__, __LINE__, ##__VA_ARGS__)
#endif

#define check(A, M, ...)                   \
	if (!(A)) {                        \
		log_err(M, ##__VA_ARGS__); \
		errno = 0;                 \
		goto error;                \
	}

#define sentinel(M, ...)                   \
	{                                  \
		log_err(M, ##__VA_ARGS__); \
		errno = 0;                 \
		goto error;                \
	}

#define check_mem(A) check((A), "Out of memory.")

#define check_debug(A, M, ...)           \
	if (!(A)) {                      \
		debug(M, ##__VA_ARGS__); \
		errno = 0;               \
		goto error;              \
	}

#endif
